Motor-drive for duplicating-machines.



H. G. GAMMETER. MOTOR DRIVE FOR DUPLICATING MACHINES.

APPLIOATION FILED $21 122, 1908. 1 ,048,305, Patented D60. 24, 1912.

5 SHEETSSHEET 1.

H.- O. GAMMETER. MOTOR DRIVE FOR DUPLICATING MACHINES.

APPLICATION FILED SEPT,2Z.1908. 1 48,305, Patented Dec. 24, 1912.

5SHEETS-SHBET 2 H. C. GAMMETER.

MOTOR DRIVE FOR DUPLIGATING MACHINES. APPLICATION: FILED SEPT. 22, 1992.

1,048,305. Patented Dec.24, 1912.

5 SHEETS-$111131 3. E6? 4 H. O. GAMMETER.

MOTOR DRIVE FOR DUPLICATING MACHINES.

APPLICATION FILED SEPT. 22, 1908.

1 ,O48,305, Patented Dec. 24, 1912 WjTMESfiEJ: fjw zyvz'aza v mbw. 1 1 6;. 7 www M4 Kin/Q7 We Afrfs:

H. (J. GAMMETER.

MOTOR DMVE mu DUPLICA'MNG MACHINES.

Patented Dec. 24, 1912.

5SHEETSSHBBT 5.

APPLWATIUII FIRED SEP'IKZR, 1908.

UNITED STATES AT FFI CE.

HARRY C. GAMll/IETER, OF BBATENAHL, .OHIO, ASSIGNOR TO THE AMERICAN MULTI- GRAPH COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO. i

MOTOR-DRIVE FOR DUPLICATING-MACHINES.

Patented Dec. 24, 1

Application filed September 22, 1908. Serial No. 454,266.

To all whom. if may concern:

such as multigraphs, etc., the limiting fac;

tor in speed is usually the feedin' of the paper. A rotary duplicating macEine can ordinarily be driven by one hand as fast as the other hand can feed the aper. In attempting toincrease this spec of operation, 1 have accordingly found it desirable to mechanically, drive the multigraph and to mechanically feed the paper. By this means a very great increase in the speed of delivery may be provided. lVith such an embodim nt I provide an automatic switch to stop the rotation when the supply of paper is about exhausted:

My mechanism is accordingly a combined motor drive and paper feed. for printing machines, though it is to be understood that some of the advantages of my invention can be obtained by using only a part of the combined mechanism. I l

The paper feeding device pro or is covered in a divisional application 0. mine filed November 22. 1909, and numbered 529495.

My invention is hereinafter more fully explained in connection with an approved embodiment thereof, and its essential features are summarized in the claims.

1n the drawings, Figure 1 is a side elevation of the mechanism constituting this invention, and showing also a portion of a mul'tigraph with which the present mechanism cooperates; Fig. 2 is an enlarged section in a plane parallel with Fig. 1 of the feed roller and sheet separating and guiding (l(\'lttl Fig. 3 is a front elevation of the mechanism shown in Fig. 1; Fig. 4 is a rear elevation ol the paper feeding mechanism tlotzu-luwlz' Fig. 5 is a portion of a bottom plan of the bed plate showing the automatic switch; Fig. (5 is a vertical section through on the sheets of paper; Fig. 12 is :1 pers ective of the link which drives the main eed roller; Fig. 13 is a detail showing the hearing of the paper pressing arms, being a section on the line 13-13 of Fig. 3; Fig. 14 is an axial section of the main feed roller; Fig. 15 is a cross section through the feed roller shaft showing the ratchet. mechanism; Fig,

16 is a detail of the clamp for the paper support, as lndicated by the line 16-16 of Fig. 3.

n the upper part of Figs. 1 and 5-3 is shown a portion of a multigraph comprising a rotary ty e carrying drum 20, mounted between end plates 21 and 22. On this drum is a gear 23 which meshes with a gear 24 on a platen cotiperating with the drum. These gears are indicated by broken lines in Fig. 1, where the shaft of the platen is also shown at 25. Fig. 3 shows a portion of the gear 23 in side elevation, and Fig. 6 shows the gear 24 in side elevation, as well as the platen 26 in dotted lines. In front of the platen of the standard multigraph are feed rollers 29 and 30, the former of which is connected by a gear 31 with the platen gear 24. These are shown in dotted lines in Fig. 4

four upright tubes 36 connected by cross tubes 37 and-38. The upper ends of these tubes 36 carry flan ed guides which are adapted to em r'acet e feet 34, holding the multig'raph in place. My present invention is 'adapted to be removably mounted on such stand. To this end, I mount the motor and .its lgearing on a horizontal bed plate 40, which has corner cars 41 adapted to occupy the uides 39 on the upper ends of the tubes 36. ;Accordingly, to mount this portion of the machine it is only necessary to lift off the 'multigraph from its stand, put the bed plate in place, and put the multigraph on top of the bed plate, and clamp it thereto by screws 42 screwing into the ears 11. The motor drive mechanism, which is hereinafter more fully explained, has a gear 60 meshing with the platen gear 24, and it is connected with the paper feed roller, hereinafter described, by aremovable link 70.

The mechanism which supports the paper is mounted in a removable self contained structure shown in Fig. 4. The frame of this structure consists of two upright bars and connect ng cross rods 51 and 52.

The upright bars have laterally extending lips or brackets 53 which are adapted to be screwed onto the fro t edge of the bed plate 40, as indicated by tie screws 54 in Fig. 3.

From the' above description, it will be seen that my mechanism requires no change whatever in the multigraph itself, and-has no'parts fastened to the multigraph,.but it is simply necessary to place the multigraph on the stand, its platen gear then meshmg tachabilityis one of the features of my invention. I

Reverting now to the motor drive po-rtion, there will be seen secured to the under side of the bed plate 40 a motor 61, the armature shaft 59 of which is provided with a pinion 62 which meshes with a gear 63 on a shaft 64 mounted in lugs 43 on the under side'of the bed plate. Near the other end of this shaft 64 i's a pinion 65 meshing with the gear 60, which in turn is adapted to mesh with the platen gear 24. This gear 60 is on ashaft 66 upon which is a pinion 67 meshing with a gear 68 on the shaft 69. On the end of this shaft is a crank 71 which operates the link to drive the paper feed, .ereinafter explained. To vary the spec of the operation, I make the gears 62, and 63 easily removable and replaceable by gears of other sizes. The means for scourmg "pach of these gears to this shaft is the samet and is illustrated in Figs. 8 and 9.- Therje 59 indicates the, shaft, on a reduced The paper feed portion of the mechanism' is best shown in Figs. 1 to 4. As heretofore explained, it has a frame comprising vertical side bars 50 secured to the bed plate 40 and connected and braced by cross rods 51 and 52. Carried by these cross rods'is a vertical central bar which has an under out front edgeon which is slidably mounted a bottom support 81 for the paper. This support is adapted to be adjusted up and down the bar'80 and locked in position by the clamping screw 82 which binds depending arms 83 of the support on the bar 80 as shown in Figs. 3fand 16. This bottom support is preferably of sheet metal and extends approximately horizontally and then turns upwardly, as shown. Edge guides .for the paper are provided by the two plates 85- which have forwardly projecting edge flanges 8 6 and are'slidably mounted on the cross rods 51 and 52 by means of eye plates.

88 and 90, on the back side of the plates 85.

The edge guides are clamped in adjusted position byset screws 89 screwing into the eyes of the lower eye-plates 90. v By the above means there is provided a holder for the block of paper extending vertically, the foremost sheet resting against the plates 85, the edges being guided by the flanges 86 and the bottom and outer side being supported by the support 8.1.

Mounted in the side frames 50 above the upper edges of the plates 85 is a shaft 92 on whichis mounted-the main feed roller 93 which may consist of a number of short rubber sections, as shown in Fig. 4. On its outer side this feed roller alines' with or extends slightly beyond the plane of the plates 85 so that the block of paper carried in the holder may rest near the upper end of the forward sheet against the roller 93. The paper is pressed against the roller 93 by the roller 95 mounted in the two arms 96 which have bell crank extensions 97, as shown in I ig. 1, to'which are attached tension springs 98 which are adjusted by the ,screws 99 having knurled heads 100 and mouhted in the frame and screwing into nuts 101 to which the springs are attached, the'senutsbeing held by thefingers when it ,is desired to change the adjustment.

The result of thedescribed construction is that the roller 95 is caused to bear with the desired pressure against the paper and hold it against the roller 93. In order to insure proper pressure at both edges of the paper it is desirable that the roller have independent springs for its two ends, as Hlitflll'll. it also desirable that the roller with its two arms may be adapted to be swung back as a unit for placing the paper and may not be caused to be sprung or twisted by one arm swinging l'ltlt'h' without the other. .iPoot'tlihgfl). l mount the two arms ill on a cross r d ttli; which is loosel) journalcd in the l'rame members Fit). The arms. ltoivov or, are not absolutely rigid on this ross rod. but have a slight play. as.

indicated in Fig. l3, where it will he soon that the connection between the arm and the cross rod is made by pin lot rigid in the l'nss red but occupying enlarged o .)ei'iings in the arm.

"lh-sabo-re described connection allows enough imhaiendemre of play of the two arms {to to cause the pressure to be even, while the independence is so limited that the wringing hack of one of the arms will necessarily turn back the othc' and the roller. To hold the arms and the roller in their retracted position, to allow the installation of the paper, I provide a catch 105, which adapted to hoohover the pin on one of the short arms 97 to which the spring 98 is attached. This is best shown in Fig. 1.

it will he understood Irotn the ahore do:

srription that tho paper to be led stands in a vertical plane held lightly near its upper end hotwoen the rollers 95 and iii). This is shown. in Fig :6 where the lines it) illusirate the paper. Accordiilgih. it the roller 91; be r tated with its outer side upwardly,'

the tendormy will be to Food the nearest sheet upwardly. To limit the food to one sheet at a time, and to guide the sheet so that it is changed Llrom an upward feed to a horizontal teed so as to pass into tho'niultigraph. i providia pm-uliarlv shaped bar, tho form of whi h has been demonstrated bi" actual prnt'lit't' to be very effective.

'the dcliortiug bar is shown in Fig. 2, and designated lll. its under surface terms a stop for those sheets of pa per standing some dis-dance back from the roller 93. .tcoordingly, the outermost portion of the uudor surface of this bar shown at 112 is suhstantially parallel with the bottom portion ot the support S1. in front of this the bar int-lines upwardly. as shown at HI"), and then has a downward rib ill. the surface of which joins by a more or less abrupt curve with the surface 'l lb. In front ot the point of this rib the bar int-lines upwardly more abruptly, as shown at 115. iYow. with such a deflecting or separating bar tho sheet. as lod upwardly by the roller h t. iirsl engages the bar. and thou upon the continuation of the feeding buckles at its upper edge until such edge is curved more or less nearly horif/tontally when it passes beneath the rib 114 and moves toward the multigraph horizontally beneath the guide. 120. 121 represents an under guide on which this sheet may rest, this guide being curved upwardly near its extreme end, as shown at 122, to bend the sheet of paper upwardly so that it is buckled as it strikes tho regular guide plate of the nulltigraph. and tints passesdownward against the lingers 33 buckling more or less according tothe time those fingers hold it, and advancing into the. multigraph under tho influence of the rollers 29 and 30, as explained in the patent referred to. The under guide 121 continues outwardly in the form of strips 123 which are of quadrant. shape and occupy recesses between the sections 93, these strips joining into a transverselyextending vertical strip 124-, which stands above the plates 8:).

The principle of the separation ol the sheets so that but one at a time is fed is that the rib 1H- introduces enough resistance to the movement of the paper so that it is easier for each trout sheet to slip n the adjoining one than to carry such adjoining one with it. while the resistance is not great enough to hold back the sheet which is actually eu gagcd by the roller il. 'lhe result is that several sheets may be fed upward slightlylrv the rollert but that only the forward sheet is caused to buckle and escape from the guiding rib 114-. This is a very important point, as the separation of the sheets and inslllalurr of the feeding of but one at a time has been one of the causes of automaticfeeds being inelieetive. lhe present feed has been thoroughly demonstrated and found to be very effective.

In the above description of the operation it has been assumed that the main feed roller 93 is rotated only in the right hand direction, as indicated by the arrow in Fig.

'2. This rotation, howeyer, in this direction 3 aml it?) which engages with the teeth of the pinion T4. The feed roller 93 is loose on the shal't 92, but carries a pawl 77 which is adapted to engage a ratchet TS pinned to the shal't. .tmordingiv, when the I'iltli Tt tll'l\'l,-- the pinion aml shall in one direction. the rah-h t engaging the pawl dri\os the food roller, while for the returning stroke of the link, the ratchet clicks idly beneath the pawl. The amount of the rotationof the feed roller 93 is varied by adjusting the amount of throw of the link, which I accom.

plish by making a variable connection.be-' tween the link and the crank 71. Accordingly, shown in Fig. 1, the crank is slotted and the link is connected thereto by a pin 79 "amount of each movement of the feed roller be adjusted, but the time when it begins its movement may be regulated with reference to the regular feed of the multigraph.

It is to be understood that the cam on the multigraph which controls the fingers 33 is adjusted according to the matter on the printing drum, and according to the letter head on the paper, as explained in the patent referred to. and then the crank 71 is adjusted so that the paper will be fed by my automatic mechanism against the fingers 33 just in advance of the time when these fingers are swung downward to release the paperv to the action of the'feed rollers 29 and 30.

It will be seen from the above description that the printing operation is entirely automatic. \Vhen the motor is started, the drum rotates andthe paper is fed thereto one sheet for each rotation. To stop the operation of the machine when the paper runs out, I provide an automatic switch for the motor controlled by the follower frame'on the .paper feeding mechanism. This automatic switch employs as a part of itself the regular switch for starting the motor. This is illustrated in Figs. 1' and 5.

Referring to Fig. 130 illustrates a block of insulation secured to the under side of the bed 40. Carried by this are a pair 0 terminal springs 131 which are connected with binding posts 132 fromwhich lines 133 lead to the motor. Slidably mounted on the under side of the bed is a rod 135 which carries near its inner end an insulating sleeve 136 around which is a metallic sleeve 137. Now when this rod is pushed inwardly, the metallic sleeve engages with each of the I springs 131 and electrically'connectsthem,

starting the motor. The inward movement of the rod 135 may be accomplished by the operator pushing with his finger on the projecting hand 138 ot-the .rod whichextends nutat the lefthand end of the machine: A

suitable spring 139 tends to hold the rod in position with the switch open. .When, however, the rod has been pushed inwardly sufliciently to close the switch the nose 140 of a pivoted lever 141 engages in a notch 142 in the rod under the influence of a spring 143 and holds it in its innermost'position. The lever 141 projects outwardly beyond the base and has a finger portion 144 by which it may be pushed toward the finger piece 138, releasing the rod and stopping the motor. This provides for the manual starting and stopping of the motor. Connected with the lever 141 is a link 146 which extends forwardly and projects out at the front end of the base plate, as shown at 147, (Fig. 1), directly behind a screw 148 adjustably carried in the left hand arm 96 of the follower frame. This screw is so adjusted that when the paper has been all used except a few sheets, the screw will have pressed. the rod 146 sutliciently to cause the nose 140 of the lever to release the rod 135, which springs outwardly under the influence of its spring 139, thereby breaking the circuit and stopping the motor.

From the abovedescript-ion, it will be seen that my mechanism. while'being extremely matic in operation, driving the multigraph and feeding the paper and stopping itself when the paper becomes exhausted. Furthermore, that it is very easy to supply a new block of paper and to restart the motor.

The adjustments for different sizes of sheets of paper, as well as for different stiffness and thickness of paper, are very easily and readily made. The power driveand paper feed is removable as a whole, or separately, as desired, and it in no manner interferes with the ordinary multigraph. No change in the multi-graph is necessary, as the ex posed under portion of the platen gear is availed of for the connection of the power drive.

The usual crank drive of the multigraph may be empldyedwith the identical mechanism shown, it desired, the switch to the motor being simply kept open or the motor fbeing entirely disconnected at the gears 62 and 63. The change in these gears; as already mentioned, changes the speed of operation according to the requirements. By removing one of these gears, or dispensing \Vlih' the motor, we may have a hand drlven machine with an automatic paper feed which is an advantage over the hand feed. On the other hand, by disconnecting the link 70, the paper narily ke ep up with the power driven rota- 'may be fed by hand associated, if desired, I

tiohs- These diflerences in use emphasize,

however, the adaptability of my invent-ion.

It operates with any of the usual sizes and weights of paper, and-in its complete form it enables the turning out of copies by the multigraph much more rapidly than has heretofore been possible.

' adapted to {engage with the 2. Theico mbmation of a pr/mtmg drum,

an under running platen, gearing connecting the two, and a paper feeding. device, all being mou ttd in a self contained movable structure and constituting a duplicating machine, ankautomatic' paper feed, and a power drive connected therewith, said power drive being mounted independently of said selfcontained structure which is removable from it and having a gear adapted to mesh with the platen gear of the duplicating machine. 3. The combination with a duplicating 1 machine and a stand therefor of a combined power driv and paper feeding device and a frame for the power drive and aper feeding device independent of the uplicating machine nd stand and adapted to be removably carried by said stand and interposed bet 'ween it and the duplicating machine when desired.

4. The combination with a duplicating machine having a supporting frame, a stand onthe 'pper end on which said frame may rest, an a power drive for the duplicating ,machinel mounted on a horizontal plate iadapted to be interposed between the upper end of ,the stand and the base of the duplieating machine, and an automatic paper feed for the, duplicating machine mounted on the 1 front edge of said plate and operated by said power 1 drive. 7

5. lllhe combination, with a duplicating machineand a stand adapted to support it,

of, a plate adapted to be removably carried by said stand and interposed above it -and gearing connected therewlth and having a ,belqwl the duplicating machine, when desired, and a power drive mounted on the under side of said plate.

6; The combination with a duplicating maehline having a printing. drum and an undebrunning platen, of a gear on the drum, a platen gear connected therewith, and a motordrive for such duplicating machine motor on the under side thereof, a train of gear exposed above the bed plate, combined with a duplicating machine adapted to stand over such bed plate and-having a platen with a gear with which the gear of the power drive may removably mesh.

8. A power drive having a bed plate, a motor on the under side thereof, a shaft on the under side thereof, interchangeable gears connecting the armature of said motor with said shaft, a gear exposed above the bed plate connecting with said shaft, combined with a duplicating machine having a rotary platen and a gear thereon adapted to connect with the said exposed gear.

9. The combination with a stand and a duplicating machine adapted to rest on the mounted on a plzite formed to be interposed between the upper end of the stand and the base of the duplicating machine, said duplicating machine having a gear connccted with its platen and exposed on the under side, and said driving mechanism having a gear exposed on its upper side and adapted to mesh with the platen gear.

1.0. The combination with a stand and a duplicating machine adapted to rest on the upper end thereof, of driving mechanism mounted on a plate formed to be interposed between the upper end of the stand and the base of the duplicating machine, said plate having ears adapted to engage locating guides on said stand.

11. The combination of a stand, a duplieating machine having feet adapted to rest on the upper cut! of the stand, a plate formed to be'interposed between the upper end of 'thestand and the feet of the duplicating machine, said duplicating machine having a printing member and a rotary laten with a gear thereon, and driving mec anism carried by said late and having a gear with which the platen gear may be caused to mesh by simply placing the duplicating machine on the plate.

12. The combination with a stand and a duplicating machine, of a bed plate adapted to be interposed therebetween, a power drive on the bed plate comprising a motor and a train of gearing, ore of the gears of which is adapted to mesh with one of the gears on the duplicating machine, and interchangeable gears in such train of gcaringgavhereby the speed of :drive may be regulated.

13. The combination, with aduplicating machine and a stand adapted to supnortjt. of a plate adapted to be removabiy rasriml by the stand interposed above it and below the duplicating machine when desired, and driving gearing mounted on said plate and adapted to connect with the gearing of the duplicating machine.

14. The combination, with a duplicating machine having a rotary printing drum with a gear and an under-running platenivith a gear meshing with the drum gear, of a stand for the duplicating machine, a frame adaptupper end thereof, of driving mechanism ed to be carried by the stand, and driving gears of the duplicating machine, andrneeh '10 gearing carried by the frame and having a anism for rotating the driving gearing at gear adapted to mesh with the under side of varying speeds. 1

the platen gear. In testimony whereof, I hereunto aflix my 15. The combination, with a stand and signature in the presence of two Witnesses.

duplicating machine, of a bed plate adapted HARRY C. GAMMETER.

to be interposed therebetween, driving gear- Witnessesz. I

ing on the bed plate, one of the gears of C. G. ROBINS N,

which is adapted to mesh with one of the, v H. W.-ROBINs0N.' 

